Electronics Forum | Tue Jan 02 09:54:56 EST 2007 | slthomas
Chalk this one up to semantics. Regardless of when you start pumping (do you use a needle with a foot? In that case the pump will run when the foot touches the board), your volume of epoxy is the same. You just have less room for it where there is si
Electronics Forum | Tue Mar 09 23:34:35 EST 1999 | Clarissa Ortner
We are starting up an SMT line with a printer and convection oven.... The area we are considering for the printer is totally uncontrolled for humidity, temperature and even cleanliness. We are working on the filters to keep particulates down, but I
Electronics Forum | Tue Oct 16 11:51:26 EDT 2001 | bobm
i am using the epibond. i had alpha come in and look at our set up. they told me that the epibond can be reflowed at regular temp profiles with no problems. because i only have one oven and two pick n place machines it was important to be able to run
Electronics Forum | Thu Jul 12 10:23:30 EDT 2012 | blnorman
Check with your adhesive manufacturer. In a previous life we had one line that was either double sided reflow or wave following reflow. When it was ds reflow, we just shut off the wave. When it was reflow/wave, we kept the reflow oven on with the
Electronics Forum | Tue Feb 08 16:09:09 EST 2000 | dean
Generally speaking with most electronic grade epoxies: 1. Cure time is a function of temperature. 2. Polymer bonds begin to quickly break down above certain temperatures (product specific). I believe aprox 170-180C. The strength of the bond de
Electronics Forum | Tue Aug 04 11:10:22 EDT 1998 | Chrys
| Hi Stoney, | Justin is giving you some good advice, unfortunately these kinda' problems sometimes call for the ol' D.O.E...otherwise, you could be chasing your tail for a while until you figure out exactly what's causing your problems. | Has
Electronics Forum | Fri Aug 12 03:54:03 EDT 2005 | Mika
Does the pcba:s comes directly from the assembly line, You are going to do rework on? If faulty pcba:s comes back from, let say a customer from outside or the pcba:s has been on Your shelf for some days/weeks, exposed to open environment (humidity in
Electronics Forum | Wed Mar 10 09:52:22 EST 1999 | justin medernach
| We are starting up an SMT line with a printer and convection oven.... The area we are considering for the printer is totally uncontrolled for humidity, temperature and even cleanliness. | | We are working on the filters to keep particulates down,
Electronics Forum | Tue Jun 05 22:18:47 EDT 2001 | Dreamsniper
I don't understand why you wanna do this. The vendor has done this part for you and actually they have a recommended glue / solder paste life on the stencil or pcb (e.g. 6 hrs, 8 hrs.). If you will stick with their recommendations you won't be lost p
Electronics Forum | Fri May 25 17:25:25 EDT 2001 | morefun
Is anyone out there is the contract or the OEM sections using viscometers to check solder paste or glue for acurate process definitions. By this I mean check the materials viscosity over a period of time and measure the degradation of performance, t
